During April 2025, Robert Reeves contributed to the apache/spark repository by developing and delivering a new Spark SQL function, make_time, which constructs time data type objects from hour, minute, and second inputs. He implemented robust error handling and comprehensive unit tests to ensure reliability and correctness. In addition to feature development, Robert addressed a reliability issue by fixing a hang that occurred when MDC was unavailable in Spark executors, also enhancing MDC-related logging for improved observability and error diagnosis. His work demonstrated depth in backend development, leveraging Scala, Apache Spark, and SQL to improve both functionality and system stability.